I need help getting u-boot to display its interactive prompt. I posted
yesterday to the u-boot mailing list, but I haven't gotten a response yet.

I have an IBM/AMCC PPC440GP evaluation board ("Ebony"). I built u-boot
with gcc 3.4.4 by issuing

make EBONY_config
make

which built u-boot without any errors. I did not modify the
configuration header file at all. The default disables automatic boot,
so I should just get a prompt.

I wrote the resulting u-boot.bin file to flash using a JTAG programmer.
I set the DIP switches and jumpers according to the README.ebony
instructions. When I turn on the power, it displays some console text
and then stops without a prompt. The console text is as follows: